Revolver Versus Crow

The crows are ruling in villages and hamlets.
You have been given a revolver with special noise-repelling ammunition. To finish the level and move on to the next one you need to scare 4 crows to make them fly away. It is not recommended to scare other birds!
It is not a problem if you run out of bullets. You can watch the commercials, get extra ammo and finish the level. There is another option - reload the revolver. The drum will be full, but the level will start again with 4 crows.
Your choice.